// Image.cs - Customizations to Gtk.Image
//
// Authors: Mike Kestner  <mkestner@novell.com>
// Authors: Stephane Delcroix  <sdelcroix@novell.com>
//
// Copyright (c) 2004-2008 Novell, Inc.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the Lesser GNU General 
// Public License as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.

namespace Gtk {

	using System;
	using System.Collections.Generic;
	using System.Runtime.InteropServices;

	public partial class Image {

		[DllImport(Global.GtkNativeDll, CallingConvention = CallingConvention.Cdecl)]
		static extern IntPtr gtk_image_new_from_icon_set(IntPtr icon_set, int size);

		public Image(Gtk.IconSet icon_set, Gtk.IconSize size) : base(IntPtr.Zero) {
			if (GetType() != typeof(Image)) {
				var vals = new List<GLib.Value>();
				var names = new List<string>();
				names.Add("icon_set");
				vals.Add(new GLib.Value(icon_set));
				names.Add("icon_size");
				vals.Add(new GLib.Value((int)size));
				CreateNativeObject(names.ToArray(), vals.ToArray());
				return;
			}
			Raw = gtk_image_new_from_icon_set(icon_set.Handle, (int)size);
		}

		[DllImport(Global.GtkNativeDll, CallingConvention = CallingConvention.Cdecl)]
		static extern IntPtr gtk_image_new_from_stock(IntPtr stock_id, int size);

		public Image(string stock_id, Gtk.IconSize size) : base(IntPtr.Zero) {
			if (GetType() != typeof(Image)) {
				var vals = new List<GLib.Value>();
				var names = new List<string>();
				names.Add("stock");
				vals.Add(new GLib.Value(stock_id));
				names.Add("icon_size");
				vals.Add(new GLib.Value((int)size));
				CreateNativeObject(names.ToArray(), vals.ToArray());
				return;
			}
			IntPtr native = GLib.Marshaller.StringToPtrGStrdup(stock_id);
			Raw = gtk_image_new_from_stock(native, (int)size);
			GLib.Marshaller.Free(native);
		}

		void LoadFromStream(System.IO.Stream stream) {
			try {
				Gdk.PixbufAnimation anim = new Gdk.PixbufAnimation(stream);
				if (anim.IsStaticImage)
					Pixbuf = anim.StaticImage;
				else
					PixbufAnimation = anim;
			} catch {
				Stock = Gtk.Stock.MissingImage;
			}
		}

		public Image(System.IO.Stream stream) : this() {
			LoadFromStream(stream);
		}

		public Image(System.Reflection.Assembly assembly, string resource) : this() {
			if (assembly == null)
				assembly = System.Reflection.Assembly.GetCallingAssembly();

			System.IO.Stream s = assembly.GetManifestResourceStream(resource);
			if (s == null)
				throw new ArgumentException("'" + resource + "' is not a valid resource name of assembly '" + assembly + "'.");

			LoadFromStream(s);
		}

		static public Image LoadFromResource(string resource) {
			return new Image(System.Reflection.Assembly.GetCallingAssembly(), resource);
		}

		[Obsolete("Use the Animation property instead")]
		public Gdk.PixbufAnimation FromAnimation {
			set {
				gtk_image_set_from_animation(Handle, value == null ? IntPtr.Zero : value.Handle);
			}
		}

		[Obsolete("Use the File property instead")]
		public string FromFile {
			set {
				IntPtr native_value = GLib.Marshaller.StringToPtrGStrdup(value);
				gtk_image_set_from_file(Handle, native_value);
				GLib.Marshaller.Free(native_value);
			}
		}

		[Obsolete("Use the Pixbuf property instead")]
		public Gdk.Pixbuf FromPixbuf {
			set {
				gtk_image_set_from_pixbuf(Handle, value == null ? IntPtr.Zero : value.Handle);
			}
		}
	}
}